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Bought late in 2018 and van only has 2600 miles on it, half city-half highway. Started a local 15 mi round trip with only 2 stops. At about 11 mi into trip, nearly had a heart attack from the sudden red, flashing warning in the dash about super high operating temperature. Immediately pulled to shoulder and shut off engine. After getting heart rate back to somewhat normal, restarted engine and still in red. Called Chrysler emergency and had vehicle towed to dealer. Dealer puts it on computer, diagnostics show nothing--no history, no error codes, etc. "But, by the way, both your primary and auxiliary batteries were bad so we replaced them, we just can't figure out why it overheated." They ran the engine on the lot, drove it for 20+ mi, and everything functioned "as expected." So....I pick up the car, drive the exact same route home as before, watching the actual temp readout the whole way. Things seemed fine, temp fluctuated 200-220, with minimal increasing over 5-6 miles. Driving speeds varied from 40-55 mph with a few stoplights. Then things got bizarre. I watched the readout increase 5-10 deg each time the car made a hard turn, left or right, but it didn't decrease. After the 5th hard turn, temp readout rapidly increased to red zone within ~300 yds, yes, yards. Any thoughts?
 

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Bought late in 2018 and van only has 2600 miles on it, half city-half highway. Started a local 15 mi round trip with only 2 stops. At about 11 mi into trip, nearly had a heart attack from the sudden red, flashing warning in the dash about super high operating temperature. Immediately pulled to shoulder and shut off engine. After getting heart rate back to somewhat normal, restarted engine and still in red. Called Chrysler emergency and had vehicle towed to dealer. Dealer puts it on computer, diagnostics show nothing--no history, no error codes, etc. "But, by the way, both your primary and auxiliary batteries were bad so we replaced them, we just can't figure out why it overheated." They ran the engine on the lot, drove it for 20+ mi, and everything functioned "as expected." So....I pick up the car, drive the exact same route home as before, watching the actual temp readout the whole way. Things seemed fine, temp fluctuated 200-220, with minimal increasing over 5-6 miles. Driving speeds varied from 40-55 mph with a few stoplights. Then things got bizarre. I watched the readout increase 5-10 deg each time the car made a hard turn, left or right, but it didn't decrease. After the 5th hard turn, temp readout rapidly increased to red zone within ~300 yds, yes, yards. Any thoughts?
Welcome to the forum.
I don't have a solution and don't remember reading about anything like what you mentioned, but maybe someone else will have a suggestion.

You can try private messaging @ChryslerCares with your VIN, but I suspect that you will have to take the van back to the dealer for further investigation.

The build date (at least month and year) is on the driver's door if you are interested in knowing it.
 

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Very strange. Doesn't sound like an electrical glitch, though...they generally fail "All or nothing" because of a short. Meaning the PCM will think the engine is as hot as it's programmed to read, or as cold as possible. It almost sounds like a sticky thermostat if it slowly progressed to the limit like that.

What was your oil temperature when this happened? That will rise and fall behind coolant temperature. So I wouldn't expect it to get as hot, but it would be warmer than usual by the time you shut it down.
 

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What was your oil temperature when this happened? That will rise and fall behind coolant temperature. So I wouldn't expect it to get as hot, but it would be warmer than usual by the time you shut it down.
Thanks for the tip. I'll monitor the oil as well as coolant temp on the trip back to the dealer tomorrow. Sadly, this is the second fault with this van. Check engine light came on when driving it home after purchase from the dealer last year. The grill shutter connection shorted and fried the sensor and assembly. It stayed at dealer for more than a week to get all the parts. Dealer said this current problem has no "connection" to that.
 

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Bought late in 2018 and van only has 2600 miles on it, half city-half highway. Started a local 15 mi round trip with only 2 stops. At about 11 mi into trip, nearly had a heart attack from the sudden red, flashing warning in the dash about super high operating temperature. Immediately pulled to shoulder and shut off engine. After getting heart rate back to somewhat normal, restarted engine and still in red. Called Chrysler emergency and had vehicle towed to dealer. Dealer puts it on computer, diagnostics show nothing--no history, no error codes, etc. "But, by the way, both your primary and auxiliary batteries were bad so we replaced them, we just can't figure out why it overheated." They ran the engine on the lot, drove it for 20+ mi, and everything functioned "as expected." So....I pick up the car, drive the exact same route home as before, watching the actual temp readout the whole way. Things seemed fine, temp fluctuated 200-220, with minimal increasing over 5-6 miles. Driving speeds varied from 40-55 mph with a few stoplights. Then things got bizarre. I watched the readout increase 5-10 deg each time the car made a hard turn, left or right, but it didn't decrease. After the 5th hard turn, temp readout rapidly increased to red zone within ~300 yds, yes, yards. Any thoughts?
Hi blue_lak,
We apologize for the experience you have had! Please send us a private message if you continue to experience this and we will be happy to look into this to see if there is anything we can do on our end to help you out.
Lydia
Chrysler Social Care Specialist
 
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